Computer Monitors

Computer monitors are the way in which the user interfaces with the computer and the information it carries. Almost any computer which is used by a human operator, rather than supporting another computer (unless specifically for those without sight) has a monitor to display information. A monitor can be any size depending on its purpose from a hand-held net book to a wall mounted, high quality screen for displaying information or films.

The majority of modern computer monitors that can be bought are TFT LCD flat panel screens. This kind of monitor is slim-line, taking up little space on the desk, low energy, requiring small amounts of energy to light and control each pixel and display a high quality image with crisp lines and true colours. TFT monitors can also be seen on laptop computers, which would not have been possible until the invention of TFT screen technology allowing lighter, slimmer screens.

CRT or cathode ray tube monitors are still in existence, although no longer sold brand new. A CRT monitor has a more limited lifespan than a TFT LCD monitor due to the cathode ray tube which holds gas and projects an analogue image onto the screen.

The third type of computer monitor available is a plasma screen. Although more costly than a TFT computer monitor, a plasma panel has many advantages. The screen can cope with a wider range of colour and contrast and responds more quickly than an LCD monitor. The image can be viewed from any angle without distortion and a plasma screen can be manufactured in much larger sizes – up to almost four metres diagonally.